Quickstart agentos CLI example doesn't work

[trush]

Using the example code from simple_agent in the Quickstart, the CLI example using agentos run doesn't work. The error complains about advance not being implemented:

Found first subclass class <class 'agentos.core.Agent'>; returning it.
Traceback (most recent call last):
...
NotImplementedError

It appears to be using the wrong subclass of Agent.

With the provided simple_agent.py, in the python interpreter we see:

>>> import simple_agent
>>> dir(simple_agent)
['Agent', 'SimpleAgent', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__']

We can change the first two lines of simple_agent.py to be

import agentos
class SimpleAgent(agentos.Agent):

Then in the interpreter we see:

>>> import simple_agent
>>> dir(simple_agent)
['SimpleAgent', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 'agentos']

With this version, with SimpleAgent first in the list, the CLI example works.